Regulation 29-106(5). Repeal.

The rate of tax on coal shall be determined as follows: 
(A) The basic rate shall be 60c per ton of coal.
(B) The rate shall be adjusted each quarter based upon changes in the Wholesale Price Index - All Commodities (Not Seasonally Adjusted) prepared by the U.S. Department of Labor, Bureau of Labor Statistics.
(C) The adjustment will be one percent of the basic rate for every three points' change in the index of whole sale prices. (For the purpose of this computation, one half or more of a point shall be considered as one full point. Less than one half of a point shall be disregarded.) The adjusted rate applicable for a given quarter shall be determined as of the month preceding the quarter for which the rate shall apply.